A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6650-01-141-5999
NSN 5930-00-015-7437
NSN 5945-00-708-2124
NSN 5945-00-187-5588
NSN 6610-00-826-7235
NSN 5910-00-561-6405
NSN 6610-00-991-7755
NSN 5990-01-485-0260
NSN 5915-01-384-3704
NSN 5945-01-653-4632
NSN 5998-01-033-5047
NSN 4140-00-493-4759